Battery full charge judgment method and device, electronic equipment and storage medium

Abstract

The invention discloses a battery full charge judgment method and device, electronic equipment and a storage medium, and belongs to the technical field of external energy supply of an energy storage system.The method comprises the steps that the real-time temperature of a battery in the charging process is obtained; if the real-time temperature is larger than or equal to the first temperature threshold value, the full charge current of the battery is adjusted from the initial current to the first current, full charge judgment is carried out on the battery based on the first current, and the first current is larger than the initial current; and if the real-time temperature is less than the first temperature threshold, performing full charge judgment on the battery based on the initial current. According to the invention, the full charge judgment method of the battery can be improved, so that the overall charge capacity of the battery is reduced in a high-temperature scene, and the battery is prevented from being charged too much.

Description

Technical Field

[0001] The present application belongs to the technical field of external energy supply of energy storage systems, and specifically relates to a method, device, electronic device and storage medium for determining whether a battery is fully charged. Background Art

[0002] Batteries made of different materials will change in volume when releasing lithium ions, and the materials will break, peel off and become inactive, which is particularly obvious at high temperatures or after aging. Batteries made of different materials will have different degrees of overcharging as the temperature rises or the degree of aging deepens.

[0003] Batteries made of silicon can store ten times more lithium ions than graphite cells, greatly improving the capacity and energy density of the battery. In other words, batteries made of silicon are more prone to material breakage, peeling and deactivation at high temperatures / after aging.

[0004] Currently, during the process of charging a battery and judging whether it is fully charged, high temperatures can cause the battery to be charged with too much electricity, resulting in battery breakage, peeling and deactivation. Summary of the invention

[0005] Purpose of the invention: This application develops a battery full charge determination method to improve the battery full charge determination method, thereby reducing the overall charging capacity of the battery under high temperature scenarios, thereby preventing the battery from being charged with excessive power.

[0006] Technical solution: In a first aspect, an embodiment of the present application provides a method for determining whether a battery is fully charged, comprising:

[0007] Get the real-time temperature of the battery during charging;

[0008] If the real-time temperature is greater than or equal to a first temperature threshold, adjusting the full charge current of the battery from the initial current to a first current, so as to make a full charge determination for the battery based on the first current, the first current being greater than the initial current;

[0009] If the real-time temperature is less than the first temperature threshold, the battery is fully charged based on the initial current.

[0010] In some embodiments, the method further comprises:

[0011] If the real-time temperature is greater than or equal to the second temperature threshold, the full charge current of the battery is adjusted from the first current to the second current to determine whether the battery is fully charged based on the second current; the second current is greater than the first current, and the second temperature threshold is greater than the first temperature threshold.

[0012] In some embodiments, when the battery type is a graphite anode battery, the first temperature threshold is 40°C and the second temperature threshold is 45°C; when the battery type is a silicon anode battery, the first temperature threshold is 35°C and the second temperature threshold is 45°C.

[0013] In some embodiments, the method further comprises:

[0014] Get the battery aging degree;

[0015] If the aging degree meets the first preset condition, charging the battery based on the initial voltage;

[0016] If the aging degree meets the second preset condition, the charging voltage of the battery is adjusted from the initial voltage to the first voltage, so as to charge the battery based on the first voltage, where the first voltage is lower than the initial voltage.

[0017] In some embodiments, the method further comprises:

[0018] If the aging degree meets the third preset condition, the charging voltage of the battery is adjusted from the first voltage to the second voltage, so as to charge the battery based on the second voltage, and the second voltage is lower than the first voltage.

[0019] In some embodiments, the aging degree is characterized by the accumulated charging capacity; and determining that the aging degree satisfies the first preset condition comprises:

[0020] If the accumulated charging capacity is less than the first capacity threshold, determining that the aging degree meets the first preset condition;

[0021] Determining whether the aging degree satisfies a second preset condition includes:

[0022] If the accumulated charging capacity is greater than or equal to the first capacity threshold and less than the second capacity threshold, it is determined that the aging degree meets the second preset condition;

[0023] Determining that the aging degree meets the third preset condition includes:

[0024] If the accumulated charging capacity is greater than or equal to the second capacity threshold, it is determined that the aging degree meets the third preset condition.

[0025] In some embodiments, the first capacity threshold is 200 times to 400 times the battery design capacity, and the second capacity threshold is 500 times to 700 times the battery design capacity.

[0026] In a second aspect, an embodiment of the present application provides a battery full charge determination device, comprising:

[0027] Temperature monitoring module, used to obtain the real-time temperature of the battery during charging;

[0028] a first full charge current adjustment module, configured to adjust the full charge current of the battery from an initial current to a first current if the real-time temperature is greater than or equal to a first temperature threshold, so as to make a full charge determination on the battery based on the first current, the first current being greater than the initial current;

[0029] The second full charge current adjustment module is used to determine the full charge of the battery based on the initial current if the real-time temperature is less than the first temperature threshold.

[0030] In a third aspect, an embodiment of the present application provides an electronic device, which includes a memory and at least one processor, wherein instructions are stored in the memory, and the processor calls the instructions in the memory so that the electronic device executes any of the above-mentioned methods for determining whether the battery is fully charged.

[0031] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of any of the above-mentioned methods for determining a fully charged battery when the computer program is executed by a processor.

[0032] Beneficial effect: A method for determining whether a battery is fully charged is provided in an embodiment of the present application, comprising obtaining the real-time temperature during the battery charging process; if the real-time temperature is greater than or equal to a first temperature threshold, adjusting the full charge current of the battery from an initial current to a first current, so as to determine whether the battery is fully charged based on the first current, and the first current is greater than the initial current; if the real-time temperature is less than the first temperature threshold, determining whether the battery is fully charged based on the initial current; that is, the present application utilizes the characteristic that the battery cells in the battery have a higher charging capacity at high temperatures, and reduces the overall charging capacity at high temperatures by increasing the full charge current of the battery, so as to slow down the battery's expansion rate and capacity decay rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 The overall flow chart of the method for determining battery full charge provided in the embodiment of the present application when the real-time temperature of the silicon anode battery is used as the judgment condition;

[0035] Figure 2 A flowchart of specific steps when the real-time temperature of the silicon anode battery is used as a judgment condition in the battery full charge determination method provided in an embodiment of the present application;

[0036] Figure 3The overall flow chart of the method for determining whether a battery is fully charged provided in an embodiment of the present application when the cumulative charging capacity of the battery is used as a judgment condition;

[0037] Figure 4 A flowchart of specific steps when the cumulative charging capacity of the battery is used as a judgment condition in the battery full charge determination method provided in an embodiment of the present application;

[0038] Figure 5 Another specific step flow chart of the method for determining full charge of a battery provided in an embodiment of the present application when the cumulative charging capacity of the battery is used as a judgment condition;

[0039] Figure 6 A schematic diagram of the hardware structure of an electronic device according to an embodiment of the present application;

[0040] Figure 7 Schematic diagram of the structure of a battery full charge determination device according to an embodiment of the present application.

[0041] Reference numerals: 810 - memory; 820 - processor; 830 - communication interface; 840 - bus. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0043] It should be understood that although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another component. Therefore, the first component discussed below can be referred to as the second component without departing from the teachings of the concepts of the present application. As used herein, the term "and / or" includes any one of the associated listed items and all combinations of one or more.

[0044] Those skilled in the art will appreciate that the drawings are only schematic diagrams of example embodiments and may not be to scale. The modules or processes in the drawings are not necessarily required to implement the present application and therefore cannot be used to limit the scope of protection of the present application.

[0045] Cells made of different materials will change in volume when releasing lithium ions, and the materials will break, peel off and become inactive, which is especially obvious at high temperatures or after aging. Cells made of different materials will have different degrees of overcharging as the temperature rises or the degree of aging deepens.

[0046] Silicon is a more promising anode material. Cells made of silicon can store ten times more lithium ions than graphite cells, greatly improving the capacity and energy density of the battery. If the anode is made entirely of silicon, the capacity of the battery can theoretically increase by 70%. However, silicon anodes also have some disadvantages and challenges. The main one is that silicon materials undergo huge volume changes when embedding and extracting lithium ions, which leads to material breakage, peeling and deactivation. The release of silicon materials is particularly obvious at high temperatures / after aging. Therefore, at high temperatures or after aging, the battery charging algorithm needs to be processed to avoid excessive charging under high temperature / aging conditions, which leads to breakage, peeling and deactivation of silicon materials.

[0047] Currently, during the process of charging a battery and judging whether it is fully charged, high temperature can cause the battery to be charged with too much electricity, resulting in the battery cells breaking, peeling off and deactivation.

[0048] Taking silicon anode batteries and graphite anode batteries as examples, silicon anode batteries can be charged with about 6.5% more capacity under high temperature conditions. Compared with graphite anode batteries, which can be charged with 4.4% more capacity under high temperature, silicon anode batteries have a higher capacity under high temperature. Therefore, the full charge current of silicon anode batteries can be increased under high temperature conditions, thereby reducing the overall charging energy under high temperature, thereby slowing down battery expansion.

[0049] In view of this, an embodiment of the present application provides a method for determining whether a battery is fully charged, which dynamically adopts different charging parameters under different temperatures / aging levels, thereby avoiding overcharging of the anode material inside the battery and extending the life of the battery, so as to solve at least part of the above-mentioned technical problems.

[0050] It should be noted that the battery contains multiple strings of cells. Cells are the basic components of batteries and are usually made up of multiple battery units (or battery cells) connected in series. Each battery unit has its own voltage, usually expressed in volts (V). The voltage of a battery cell depends on its chemical composition and design. Battery voltage refers to the total voltage of the entire battery, which is determined by the sum of all the cell voltages. When multiple cells are connected in series, their voltages are added together to obtain the total voltage of the battery. For example, if a battery consists of three cells and the voltage of each cell is 3 volts, the total voltage of the battery will be 9 volts.

[0051] See also Figure 1 , Figure 1 The overall process of the battery full charge determination method provided in the embodiment of the present application using the real-time temperature of the silicon anode battery as the determination condition is illustrated. The method includes the following steps:

[0052] Step 101: Obtain the real-time temperature of the battery during charging.

[0053] Among them, this embodiment uses the real-time temperature of the battery as the judgment condition, so it is necessary to measure the real-time temperature of the battery. For obtaining the real-time temperature of the battery, a temperature sensor can be set inside the battery to measure the temperature of the battery in real time. The temperature sensor can be a thermistor, a thermocouple or other types of sensors. In this embodiment, the type of temperature sensor is not specifically limited, and it is sufficient to ensure that the position of the temperature sensor can accurately reflect the temperature of the battery. Subsequent steps can be determined based on the real-time temperature of the battery measured by the temperature sensor.

[0054] Step 102: If the real-time temperature of the battery is greater than or equal to a first temperature threshold, the full charge current of the battery is adjusted from the initial current to a first current, so as to make a full charge determination for the battery based on the first current, and the first current is greater than the initial current.

[0055] Among them, the value range of the first temperature threshold is 35℃-40℃, that is, the first temperature threshold can be any temperature among 35℃, 35.5℃, 36℃, 36.5℃, 37℃, 37.5℃, 38℃, 38.5℃, 39℃, 39.5℃, 40℃, or the range value between any two temperatures. The initial current is the factory default full charge current of the battery. That is, the initial current is the current when the battery is fully charged, and the charging current naturally decreases as the capacity of the battery increases during the charging process. The current when the battery is judged to be fully charged is the initial current. The first current is a set value, which is used to determine the full charge of the battery when the real-time temperature of the battery is greater than or equal to the first temperature threshold.

[0056] It should be noted that the full charge current is the core parameter for determining whether the battery is fully charged. During the charging process, the charging current will naturally decrease as the battery capacity increases. When it drops to a certain value, the battery is considered fully charged.

[0057] In some embodiments, the value range of the first current is 0.065C-0.085C. 0.065C is 0.065 times the design capacity of the battery, and 0.085C is 0.085 times the design capacity of the battery. That is, the first current can be any value of 0.065C, 0.075C, 0.085C, or a range value between any two values. It should be noted that the design capacity of a battery refers to the amount of electrical energy that the battery can store and release in its initial / new state according to the manufacturer's specifications and standards. This capacity is determined by the manufacturer based on factors such as the battery's chemical composition, structural design, and process parameters. The battery design capacity is usually expressed in ampere-hours (Ah) or milliampere-hours (mAh).

[0058] Step 103: If the real-time temperature of the battery is less than the first temperature threshold, a full charge determination is performed on the battery based on the initial current.

[0059] Among them, the real-time temperature of the battery is less than the first temperature threshold, which means that the temperature of the battery is not at a high temperature at this time, and the amount of electricity charged into the battery is within a reasonable range. This reasonable range refers to the amount of electricity that can be charged into the battery under the initial current when the battery is in the initial state. That is, when the real-time temperature of the battery is less than the first temperature threshold, there is no need to adjust the full charge current temporarily, and there is no need to reduce the overall charging capacity of the battery. It should be noted that the initial state of the battery refers to the state of the battery when it is produced and shipped, that is, a brand new, unused state. In the initial state, the design capacity of the battery is determined according to the manufacturer's specifications and standards, indicating the amount of electrical energy that the battery can store and release. The battery in the initial state usually has the best performance and capacity. In the initial state, the charging capacity and discharge capacity of the battery should be close to the design capacity. The charging capacity refers to the amount of charge that the battery can accept, and the discharge capacity refers to the amount of electricity that the battery can release. These two capacities should be quite close in the initial state to ensure that the battery can work normally and provide the expected power.

[0060] In view of this, when the real-time temperature of the battery is greater than or equal to the first temperature threshold, it means that the temperature of the battery is at a high temperature at this time, and the battery will be charged with more electricity compared to the initial state. This embodiment adjusts the full charge current of the battery from the initial current to the first current by adjusting the charging current of the battery, that is, the full charge current of the battery is increased, thereby reducing the overall charging capacity of the battery at high temperature, so as to reduce the risk of battery expansion and improve the safety and performance of the battery. When the real-time temperature of the battery is less than the first temperature threshold, it means that the temperature of the battery is not at a high temperature at this time, and there is no need to adjust the full charge current temporarily, and there is no need to reduce the overall charging capacity of the battery. That is, this embodiment can dynamically adjust the full charge current according to the temperature of the battery, so as to achieve the purpose of slowing down battery expansion.

[0061] In some embodiments, the method of the embodiment of the present application further includes the following steps:

[0062] Step 104: If the real-time temperature is greater than or equal to a second temperature threshold, the full charge current of the battery is adjusted from the first current to the second current to determine whether the battery is fully charged based on the second current; the second current is greater than the first current, and the second temperature threshold is greater than the first temperature threshold.

[0063] The value range of the second temperature threshold is 42°C-47°C, that is, the second temperature threshold can be any temperature of 42°C, 42.5°C, 43°C, 43.5°C, 44°C, 44.5°C, 45°C, 45.5°C, 46°C, 46.5°C, 47°C, or a range value between any two temperatures. The second current is a set value, which is used to determine whether the battery is fully charged when the real-time temperature of the battery is greater than or equal to the second temperature threshold.

[0064] In view of this, when the real-time temperature of the battery further increases, this embodiment further reduces the overall charging capacity of the battery to reduce the risk of battery expansion and improve the safety and performance of the battery. By adjusting the full charge current to the second current, the charge amount of the battery at high temperature can be limited to avoid problems such as battery cell breakage, peeling and deactivation caused by overcharging.

[0065] In some embodiments, the second current has a value range of 0.09C-0.11C. 0.09C is 0.09 times the designed capacity of the battery, and 0.11C is 0.11 times the designed capacity of the battery. That is, the first current can be any value among 0.09C, 0.1C, 0.11C, or a range between any two values.

[0066] In some embodiments, when the battery type is a silicon anode battery, the first temperature threshold is 35° C. and the second temperature threshold is 45° C. Figure 2 , Figure 2 The specific steps of the battery full charge determination method provided in the embodiment of the present application when the real-time temperature of the silicon anode battery is used as the determination condition are illustrated. The specific steps of the silicon anode battery full charge determination method are as follows:

[0067] Determine whether the real-time temperature of the silicon anode battery is greater than or equal to 45° C. If so, adjust the full charge current of the silicon anode battery to a second current, the second current being 0.1C, so as to make a full charge determination of the silicon anode battery based on the second current (0.1C); if not, proceed to the next step;

[0068] Determine whether the real-time temperature of the silicon anode battery is greater than or equal to 35°C. If so, adjust the full charge current of the silicon anode battery to a first current, the first current being 0.075°C, so as to make a full charge determination of the silicon anode battery based on the first current (0.075); if not, proceed to the next step;

[0069] The silicon anode cells were operated at an initial current of 0.05C.

[0070] In some embodiments, when the battery type is a silicon anode battery, the first temperature threshold is 35° C. and the second temperature threshold is 45° C. The method for determining whether a silicon anode battery is fully charged may also include the following steps:

[0071] Determine whether the real-time temperature of the silicon anode battery is less than 35°C. If it is satisfied, the silicon anode battery operates at the initial current, and the initial current is 0.05C; if not, proceed to the next step;

[0072] The full charge current of the silicon anode battery is adjusted to a first current, the first current being 0.075C, so as to make a full charge determination on the silicon anode battery based on the first current (0.075);

[0073] When it is determined that the real-time temperature of the silicon anode battery is greater than or equal to 45°C, the full charge current of the silicon anode battery is adjusted from the first current (0.075C) to the second current, and the second current is 0.1C, so as to make a full charge judgment on the silicon anode battery based on the second current (0.1C).

[0074] In view of this, the present embodiment can dynamically adjust the full charge current according to the temperature of the silicon anode battery, thereby achieving the purpose of slowing down the battery expansion.

[0075] In some embodiments, when the battery type is a graphite anode battery, the first temperature threshold is 40° C. and the second temperature threshold is 45° C. The specific steps of the method for determining whether a graphite anode battery is fully charged are as follows:

[0076] Determine whether the real-time temperature of the graphite anode battery is greater than or equal to 45° C. If so, adjust the full charge current of the graphite anode battery to a second current, the second current being 0.1C, so as to make a full charge determination on the graphite anode battery based on the second current (0.1C); if not, proceed to the next step;

[0077] Determine whether the real-time temperature of the graphite anode battery is greater than or equal to 40°C. If so, adjust the full charge current of the graphite anode battery to a first current, the first current being 0.075°C, so as to make a full charge determination on the graphite anode battery based on the first current (0.075); if not, proceed to the next step;

[0078] The graphite anode cell was operated at an initial current of 0.05C.

[0079] In some embodiments, when the battery type is a graphite anode battery, the first temperature threshold is 40° C. and the second temperature threshold is 45° C. The method for determining whether a graphite anode battery is fully charged may also include the following steps:

[0080] Determine whether the real-time temperature of the graphite anode battery is less than 40°C. If it is satisfied, the graphite anode battery operates at the initial current, and the initial current is 0.05C; if not, proceed to the next step;

[0081] The full charge current of the graphite anode battery is adjusted to a first current, the first current being 0.075C, so as to make a full charge determination on the graphite anode battery based on the first current (0.075);

[0082] When it is determined that the real-time temperature of the graphite anode battery is greater than or equal to 45°C, the full charge current of the silicon graphite anode battery is adjusted from the first current (0.075) to the second current, and the second current is 0.1C, so as to make a full charge judgment on the graphite anode battery based on the second current (0.1C).

[0083] In view of this, the present embodiment can dynamically adjust the full charge current according to the temperature of the graphite anode battery, thereby achieving the purpose of slowing down the expansion of the battery.

[0084] In some embodiments, during steps 101 to 104, refer to Figure 3 , Figure 3 The overall process of the battery full charge determination method provided in the embodiment of the present application is illustrated when the cumulative charging capacity of the battery is used as the determination condition. The specific steps are as follows:

[0085] Step 201: Obtain the aging degree of the battery.

[0086] Among them, this embodiment uses the degree of battery aging as a judgment condition, so it is necessary to obtain the degree of battery aging. For obtaining the degree of battery aging, an internal resistance test can be used: the internal resistance of the battery is an important indicator of battery aging. By measuring the internal resistance of the battery, the degree of battery aging can be determined. The internal resistance test can be performed using professional testing equipment or a specific battery tester; Battery capacity test: The capacity of the battery is measured through charging and discharging tests. As the battery ages, its capacity will gradually decrease. By comparing the difference between the actual capacity and the initial capacity, the degree of battery aging can be evaluated. The degree of battery aging is predicted based on the number of battery cycles and the cumulative charging capacity. By testing and analyzing a large number of batteries, a relationship model between the number of cycles, the cumulative charging capacity and the degree of battery aging can be established. According to this model, the degree of battery aging can be evaluated based on the number of battery cycles and the cumulative charging capacity.

[0087] It should be noted that the number of cycles refers to the number of charge and discharge cycles that the battery has experienced. Each complete charge and discharge cycle will cause a certain amount of loss to the battery, so an increase in the number of cycles will lead to a decrease in battery performance. By recording the number of cycles of the battery, the degree of battery aging can be evaluated. Generally speaking, the design life of the battery will specify an expected number of cycles, after which the battery's performance will significantly decrease. The cumulative charge capacity refers to the cumulative amount of charge that the battery has received during use. As the charge capacity increases, the battery's chemical reactions will cause changes and losses in the battery's internal materials, which will affect the battery's performance and life. By recording the cumulative charge capacity of the battery, the degree of battery aging can be evaluated. Generally speaking, the design life of the battery will also specify an expected cumulative charge capacity, after which the battery's performance will significantly decrease.

[0088] Step 202: If the aging degree meets the first preset condition, the battery is charged based on the initial voltage.

[0089] Among them, when the degree of aging is characterized by the cumulative charging capacity, the first preset condition is that the cumulative charging capacity of the battery is less than the first capacity threshold. The value range of the first capacity threshold is 200 times the battery design capacity-400 times the battery design capacity. The initial voltage is the factory default full charge voltage of the battery. That is, when the cumulative charging capacity of the battery is less than the first capacity threshold, the charging voltage always charges the battery at the initial voltage.

[0090] It should be noted that the cumulative charge capacity refers to the sum of the charge capacities of all cells in the battery. During the battery charging process, each cell will be charged to a certain capacity. The cumulative charge capacity is the value obtained by adding up the charge capacities of all cells during multiple charging processes. The cumulative charge capacity can be used to evaluate the aging degree and service life of the battery. As the battery is used and the charge and discharge cycles, the capacity of the battery will gradually decrease, that is, the aging degree will increase. The increase in the cumulative charge capacity indicates that the battery has received a certain amount of charge, and this value can be used to estimate the battery's service life and remaining capacity. The full charge voltage is the core parameter for determining whether the battery is fully charged. During the charging process, the battery voltage will gradually increase with the charging process. When it increases to a certain value, the battery is considered fully charged.

[0091] Step 203: If the aging degree meets the second preset condition, the charging voltage of the battery is adjusted from the initial voltage to the first voltage, so as to charge the battery based on the first voltage, where the first voltage is lower than the initial voltage.

[0092] Among them, when the degree of aging is characterized by the cumulative charging capacity, the second preset condition is that the cumulative charging capacity of the battery is greater than or equal to the first capacity threshold and less than the second capacity threshold. The value range of the second capacity threshold is 500 times the battery design capacity-700 times the battery design capacity. That is, when the cumulative charging capacity of the battery is greater than or equal to the first capacity threshold and less than the second capacity threshold, the charging voltage is adjusted from the initial voltage to the first voltage to charge the battery. It should be noted that when the cumulative charging capacity of the battery reaches 300 times the battery design capacity, it is considered that the battery has aged to a certain extent, and the charging voltage of the battery can be reduced to slow down the battery expansion rate and capacity decay rate.

[0093] In some embodiments, the first voltage has a value range of 4.45 V to 4.48 V. That is, the first voltage can be any one of 4.45 V, 4.46 V, 4.47 V, and 4.48 V, or a range between any two values.

[0094] In some embodiments, the method of the embodiment of the present application further includes the following steps:

[0095] Step 204: If the aging degree satisfies a third preset condition, the charging voltage of the battery is adjusted from the first voltage to a second voltage, so as to charge the battery based on the second voltage, where the second voltage is lower than the first voltage.

[0096] Among them, when the degree of aging is characterized by the cumulative charging capacity, the third preset condition is that the cumulative charging capacity of the battery is greater than or equal to the second capacity threshold. The value range of the second capacity threshold is 500 times the battery design capacity-700 times the battery design capacity. That is, when the cumulative charging capacity of the battery is greater than the second capacity threshold, the charging voltage is adjusted from the first voltage to the second voltage to charge the battery.

[0097] In some embodiments, the second voltage has a value range of 4.42 V to 4.45 V. That is, the first voltage may be any one of 4.42 V, 4.43 V, 4.44 V, and 4.45 V, or a range between any two values.

[0098] In some embodiments, see Figure 4 , Figure 4 The following is a specific step flow chart of the method for determining whether a battery is fully charged provided in an embodiment of the present application, when the cumulative charging capacity of the battery is used as the judgment condition. When the initial voltage is 4.5V, the first voltage is 4.45V, the second voltage is 4.44V, the first capacity threshold is 300 times the battery design capacity, and the second capacity threshold is 600 times the battery design capacity, the specific steps are as follows:

[0099] Determine whether the cumulative charging capacity of the battery is greater than or equal to 600 times the design capacity of the battery, if satisfied, charge the battery at the second voltage 4.44V, if not satisfied, proceed to the next step;

[0100] Determine whether the cumulative charging capacity of the battery is greater than or equal to 300 times the charging design capacity. If so, charge the battery at a first voltage of 4.45V. If not, proceed to the next step.

[0101] Determine whether the cumulative charging capacity of the battery is less than 300 times the charging design capacity. If so, charge the battery at an initial voltage of 4.5V. If not, terminate the charging.

[0102] In some embodiments, see Figure 5 , Figure 5 Another specific step flow when the cumulative charging capacity of the battery is used as the judgment condition in the battery full charge determination method provided in the embodiment of the present application is illustrated. When the initial voltage is 4.5V, the first voltage is 4.45V, the second voltage is 4.44V, the first capacity threshold is 300 times the battery design capacity, and the second capacity threshold is 600 times the battery design capacity, the specific steps are as follows:

[0103] Determine whether the cumulative charging capacity of the battery is less than 300 times the battery design capacity. If so, charge the battery at an initial voltage of 4.5V. If not, proceed to the next step.

[0104] When the accumulated charging capacity of the battery is greater than or equal to 300 times the charging design capacity, the charging voltage is used to charge the battery at a first voltage of 4.45V;

[0105] When the accumulated charging capacity of the battery is greater than or equal to 600 times the charging design capacity, the charging voltage is used to charge the battery at the second voltage of 4.44V.

[0106] In view of this, the present embodiment can dynamically adjust the full charge voltage according to the accumulated charge capacitance of the battery, thereby achieving the purpose of slowing down the battery expansion.

[0107] Accordingly, the embodiment of the present application further provides a battery full charge determination device, comprising:

[0108] Temperature monitoring module, used to obtain the real-time temperature of the battery during charging;

[0109] The first full charge current adjustment module is used to adjust the full charge current of the battery from the initial current to the first current if the real-time temperature is greater than or equal to the first temperature threshold, so as to make a full charge determination for the battery based on the first current, and the first current is greater than the initial current.

[0110] The second full charge current adjustment module is used to determine the full charge of the battery based on the initial current if the real-time temperature is less than the first temperature threshold.

[0111] The device adopts the battery full charge determination method in any of the above embodiments to realize the determination of battery full charge. Since the battery full charge determination method is described in detail above, it will not be repeated here.

[0112] Accordingly, the present application also provides an electronic device, see Figure 5 , Figure 5 The hardware structure of an electronic device provided by an embodiment of the present application is illustrated. The electronic device includes a memory 810 and at least one processor 820, the memory 810 stores instructions, and the at least one processor 820 calls the instructions in the memory 810, so that the electronic device executes the battery full charge determination method according to any of the aforementioned embodiments of the present application.

[0113] Specifically, the processor 820 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0114] The memory 810 may include a large capacity memory 810 for data or instructions. By way of example and not limitation, the memory 810 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. In appropriate cases, the memory 810 may include a removable or non-removable (or fixed) medium. In appropriate cases, the memory 810 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 810 is a non-volatile solid-state memory. In a specific embodiment, the memory 810 includes a read-only memory (ROM). In appropriate cases, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0115] In some embodiments, the electronic device may further include a communication interface 830 and a bus 840. The processor 820, the memory 810, and the communication interface 830 are connected via the bus 840 and communicate with each other.

[0116] The communication interface 830 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0117] Bus 840 includes hardware, software or both, and the parts of online data flow billing equipment are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front-end bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory 810 bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 840 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the application considers any suitable bus or interconnection.

[0118] Correspondingly, an embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. The above-mentioned computer-readable storage medium stores one or more programs. The above-mentioned one or more programs can be executed by one or more processors and applied to a battery cell detection system. The computer program implements the battery full charge determination method in any of the above-mentioned embodiments.

[0119] It should be noted here that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0120] The processor may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a central processing unit, a controller, a microcontroller, and a microprocessor. It is understandable that the electronic device that implements the functions of the processor may also be other, and the embodiments of the present application are not specifically limited.

[0121] The above-mentioned computer storage medium / memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory (Flash Memory), a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM) and the like; it can also be various terminals including one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0122] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0123] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the serial number of each step / process mentioned above does not mean the order of execution, and the execution order of each step / process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The serial numbers of the embodiments of the present application mentioned above are for description only and do not represent the advantages and disadvantages of the embodiments.

[0124] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0125] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0126] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0127] In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0128] A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, etc., various media that can store program codes.

[0129] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can essentially or in other words, the part that contributes to the relevant technology can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0130] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A method for determining whether a battery is fully charged, characterized in that: include: Obtaining the real-time temperature of the battery during charging; If the real-time temperature is greater than or equal to a first temperature threshold, adjusting the full charge current of the battery from the initial current to a first current, so as to make a full charge determination for the battery based on the first current, the first current being greater than the initial current; If the real-time temperature is less than the first temperature threshold, a full charge determination is performed on the battery based on the initial current.

2. A method for determining whether a battery is fully charged according to claim 1, characterized in that: The method further comprises: If the real-time temperature is greater than or equal to a second temperature threshold, the full charge current of the battery is adjusted from the first current to a second current to determine whether the battery is fully charged based on the second current; the second current is greater than the first current, and the second temperature threshold is greater than the first temperature threshold.

3. A method for determining whether a battery is fully charged according to claim 2, characterized in that: When the battery is a graphite anode battery, the first temperature threshold is 40°C and the second temperature threshold is 45°C; when the battery is a silicon anode battery, the first temperature threshold is 35°C and the second temperature threshold is 45°C.

4. A method for determining whether a battery is fully charged according to claim 1, characterized in that: The method further comprises: Obtaining the aging degree of the battery; If the aging degree meets a first preset condition, charging the battery based on an initial voltage; If the aging degree meets a second preset condition, the charging voltage of the battery is adjusted from the initial voltage to a first voltage to charge the battery based on the first voltage, where the first voltage is lower than the initial voltage.

5. A method for determining whether a battery is fully charged according to claim 4, characterized in that: The method further comprises: If the aging degree satisfies a third preset condition, the charging voltage of the battery is adjusted from the first voltage to a second voltage, so as to charge the battery based on the second voltage, where the second voltage is lower than the first voltage.

6. A method for determining whether a battery is fully charged according to claim 5, characterized in that: The aging degree is characterized by the cumulative charging capacity; Determining that the aging degree meets a first preset condition includes: If the accumulated charging capacity is less than a first capacity threshold, determining that the aging degree meets the first preset condition; Determining that the aging degree meets a second preset condition includes: If the accumulated charging capacity is greater than or equal to the first capacity threshold and less than the second capacity threshold, it is determined that the aging degree meets the second preset condition; Determining that the aging degree satisfies a third preset condition includes: If the accumulated charging capacity is greater than or equal to the second capacity threshold, it is determined that the aging degree meets the third preset condition.

7. A method for determining whether a battery is fully charged according to claim 6, characterized in that: The first capacity threshold is 200 times the battery design capacity - 400 times the battery design capacity, and the second capacity threshold is 500 times the battery design capacity - 700 times the battery design capacity.

8. A battery full charge determination device, characterized in that: include: A temperature monitoring module, used to obtain the real-time temperature of the battery during charging; a first full-charge current adjustment module, configured to adjust the full-charge current of the battery from an initial current to a first current if the real-time temperature is greater than or equal to a first temperature threshold, so as to make a full-charge determination on the battery based on the first current, wherein the first current is greater than the initial current; The second full-charge current adjustment module is used to determine whether the battery is fully charged based on the initial current if the real-time temperature is less than the first temperature threshold.

9. An electronic device, characterized in that: The electronic device includes a memory and at least one processor, the memory stores instructions, and the processor calls the instructions in the memory so that the electronic device executes the steps of the battery full charge determination method as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the battery full charge determination method described in any one of claims 1 to 7 are implemented.

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